Where can I obtain a medical waiver application?
Contact the NH Division of Motor Vehicles.

Do drug and alcohol regulations apply to commercial drivers?
Yes, to persons and their employers who operate commercial vehicles involved in commerce in any State and are subject to the US commercial driver license requirements (commercial vehicles in excess of 26,000 pounds), or Mexican and Canadian driver license requirements.

If the vehicle is certified in NH to carry additional weight, the officer shall grant a 5% tolerance on gross weight and a 10% tolerance on axle weight.

On May 4, 2006, The State received documentation from the Federal Highway Administration that tolerances are now allowed on Interstate 89, 93 and 95. These tolerances will be allowed and are calculated at 5% gross weight and 10% on axle weights. This tolerance is allowed on New Hampshire overweight certified vehicles up to and including 99,000 pounds.

Can trucks be certified to carry additional weight?
Yes. The number of axles a vehicle has and the distance between the axles, as well as the manufacturer’s axle and tire ratings determine whether a vehicle may be eligible to become certified to haul additional weight.